A store sells boxes of detergent at a regular price of $4.55. Next week, the detergent will be on sale at a 20% discount. What will
be the sale price?

Sale price of detergent after 20% discount is $3.64

Step-by-step explanation:

Regular price of box of detergent = $4.55

Discount rate = 20%

We need to calculate the sale price.

First we will find 20% of 4.55 and then subtract that amount from regular price.

Finding 20% of 4.55

So, the discount is $0.91

Sale price of Detergent = Regular Price - Discount Price

                                       = 4.55 - 0.91

                                       = 3.64

So, Sale price of detergent after 20% discount is $3.64

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!